Krill and Cassin’s auklet model results with transformation (L = linear, Q = quadratic, C = cubic) and coefficient sign for significant variables.
‡ ≥ 0.05;
* < 0.05;
** < 0.01;
*** < 0.0001.
Predictive models used a two-part model combining logistic and negative binomial regressions for krill biomass (g m-2; n = 3046) and a zero-inflated negative binomial regression for Cassin’s auklet counts (birds km-2; n = 3879). The bold variables represent significant (p < 0.01, Likelihood Ratio Test) interactions of that variable with year and coefficient sign refers to the main effect without any interactions.